Hi mate and Merry Christmas, :D I run my 98 Fourtrak on a 60/40 mix (40% svo oil) and she runs just fine, even a bit smother if anything, smells a bit though! :lol: It’s done 139,000m and I have been running it on oil for the last 10 months/10,000m with no problems, just takes a little longer to start and runs a bit rough for the first couple of minuets on cold mornings, then she’s good as gold, but when it’s very cold this time of year I just use a 20% mix, hope this helps.
Chris. :D